Episode 39: Knife Man's Nemesis
O'Hare had embarked on his strangest case. For he was on the trail of a man who combined business with pleasure by insuring his victims before killing them. And When O'Hare caught up with this homicide host, he found his quarry about to sacrifice another beautiful girl on the altar of greed.
Knife Man's Nemesis by Murray W. Mosser, read by Bryce Beattie. Originally published in 1941 in 10-Story Detective, now in the public domain.